Amateur astronomy is often referred to as backyard astronomy, which involves observing celestial objects like stars, planets, and galaxies from the comfort of one's home. Stargazing is another commonly used synonym for amateur astronomy, which refers to the act of watching stars and exploring the wonders of the universe. Astronomy enthusiasts are also known as amateur astronomers, skywatchers, and star lovers. Some other synonyms for amateur astronomy include celestial observing, night sky exploration, and astral observation. Regardless of what it's called, amateur astronomy remains a fascinating and rewarding hobby that offers a glimpse into the infinite realms of the cosmos.